Event: Division B

Opponent Rating Result
David E Aspinall 1733 1 - 0
Andrei Morgan-Short 1635 0 - 1
Edd Bagley 1626 0 - 1
performance = (sum(opponents ratings) + 400(wins-losses)) / games

1531 = (4994 + 400 * (1 - 2)) / 3)

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